If you’re in Jacksonville and thinking about heading outdoors Friday afternoon — think twice. A brutal mix of suffocating heat and intense afternoon thunderstorms is moving in. With the heat index soaring to 100°F and storms likely after 2 p.m., it’s shaping up to be one of the most uncomfortable and disruptive weather days of the week. And the steamy conditions are here to stay through Sunday.
FRIDAY’S DANGEROUS DOUBLE THREAT: HEAT + STORMS
Friday starts off deceptively calm, but don’t be fooled. Temperatures will climb fast, peaking at around 92°F, while humidity will push the feels-like temperature to a sweltering 100°F. That kind of heat isn’t just uncomfortable — it’s potentially dangerous.
By mid-afternoon, things will get even worse. Scattered thunderstorms are forecast to roll in after 2 p.m., bringing sudden downpours, gusty winds, and lightning. These storms could develop quickly and disrupt your commute, errands, or any outdoor plans. Winds could gust up to 17 mph, with heavy bursts of rain that may briefly flood streets or lower visibility for drivers.
If you’re heading home from work, picking up kids, or planning evening activities, this is prime time for disruptions. Experts advise staying weather-aware and indoors if thunder or lightning approaches.
THE WEEKEND WON’T BRING RELIEF — JUST MORE STEAM
Saturday is expected to crank up the heat even further. With a high near 94°F and humidity still sky-high, the afternoon will again bring a strong chance of thunderstorms — especially after 2 p.m. There’s a 60% chance of rain, meaning conditions will stay hot, wet, and unstable.
Sunday? More of the same. The high will creep to 95°F, and with another 70% chance of showers and storms, any outdoor plans should include backup options or shelter nearby.
Even Monday isn’t looking much better. While the day may begin with sunshine, an 80% chance of thunderstorms is expected by late morning, with the temperature once again flirting with the mid-90s.
HOW TO STAY SAFE & SANE IN THIS WEATHER:
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Hydrate constantly. Don’t wait until you’re thirsty. Dehydration can sneak up fast in high humidity.
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Limit outdoor activity during the peak heat window (12–5 p.m.).
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Never leave kids or pets in cars, even briefly — inside temps can rise past 120°F within minutes.
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Check weather apps before heading out. Thunderstorms can develop fast in Florida’s summer pattern.
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Shelter immediately if you hear thunder — lightning strikes can happen even before rain starts.
